Oricon has just published an article saying that the group will dissolve on 2/23 next year with a final concert at Tokyo Zepp DiverCity: https://www.oricon.co.jp/news/2121049/full/ I'm very sad to hear this news, the band is one of my favourite idol groups. In July last year they performed at HyperJapan in London and afterwards I got to meet the members at an HS and cheki event.